Compressed air is used to push the water out of the ballast tanks. This makes the submarine overall less dense than the surrounding seawater, and makes it rise to the surface. The same technique is used to change depth upwards, and can be stopped before the surface is reached.
Many divers resurface by exhaling. They can also resurface by swimming back to the surface of the water when they are ready.
The length of time a submarine can stay submerged without resurfacing depends on its design and capabilities. Some modern submarines can stay submerged for several months, while others may only be able to stay submerged for a few days. It is important for submarines to resurface periodically to replenish supplies and allow for maintenance and crew rest.
To resurface the ice
No
You can have your brake rotors resurface for approximately $20. The brake rotor thickness must meet minimum standards, in order for them to be resurfaced.
1. Ballistic submarines 2. Attack submarines
in blockbusters youcan get a good spray
Almost all Auto Parts stores and machine shops resurface rotors and brake drums.
The cost to resurface a gunite pool depends on your location, the size of your pool, and exactly what you want done. On average, as of 2014 it cost between $8,000 and $15,000 to resurface a pool.
Yes, North Korea has submarines
Submarines - poem - was created in 1917.
One of our Submarines was created in 1982.